Filter.



Patented Aug. 13, 1914,

PATENT OFFICE.

WILLIAM F. WARDEN, 0F AKRON, OHIO.

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Specification of Letters Patent`v Patented Aug. 18, 1914.

Application filed January 5, 1914. Serial No. 816,354.

To ail whom it may conf-ern: ,f

le it known that l/VILLIAM F. WAnpnN, a citizen of the United States, residing at Akron. in' the county of Summit and State of Ohio, have invented new andv useful Improvements in Filters,4 of which the following is a specification.

This invention relates to improvements in filters for purifyingr uids, such for instance, as lubricating oils, but the device is capable of being used in connection with other fluids, and While the word oils in connection with this device is used generically throughout the specification and claims solely for brevity, it is 'not intended by the employment of the term to limit the use of the device.

The objects of the invention are to provide an improved filter in which substan-y tiallyr all portions or any selected portion thereof may be cleaned at will Withont'interrupting the flow of the oil or necessitating the complete removal of the oil from the filter to accomplish the ,cleaning operation.

A further object is to provide a filter for the purpose described comprising a plurality of filteringlr media each one of which is individually removable either for cleaning or for any other purpose, without interrupting the flow of the oil and in which the filtering media are so arranged that their employment does not appreciably diminish the flow of the oil through the lter.

Another object is to interpose in the path of the flowing oil to be filtered. a heated baffle or dam'over which the oil flows in a thin film during which it may be heated to thereby' render the same lighter, and if possible, more fluent to increase the efficiency of the filter or render its purification easier.

A still further object is to provide efficient. mechanism for accomplishinteF the before` mentioned objects. Said mechanism embodying improved. ,means to permit the ready cleansing cflthc filter, a device particularly adaptable for usc for the purposes to which it is to hc put` and posslssing thc qualities of certainty of' operation by reason of lack of necessity for interrupting the operation at an).r time between the filtering media and thereby permit an even. continuous flow of oil through' the filter which is not appreciahlv diminishcd by the filteringr operation.

With thc foregoing and other objects in 3 vicn', thc invention consists in the novel construction. curul-finition and arrangement of parts constituting the invention to beghereinafter specifically described and illustrated in the accompanying drawings which form a part hereof wherein is shown the preferred embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the matter hereinafter claimed.

In the drawings in which similar reference numerals indicate like parts in the different figures. Figure 1, is a view in side elevatidn of filter embodying this invention with portions of the front side Wall thereof 'construction thereof, the exposed portions f' being shown in section; and7 Fig. 2, is a per- Q spective view of a portion of the filtering media emplo ed.

The filter ody comprises a main tank or receptacle provided with side walls l and 2 and end walls 3 and 4, a lower or bottom tending upwardly from the lower wall 5 and stopping short of the upper portion of the tank is a partition or diaphragm 47 proyvided near its upper end with a transverse slot 48. Adapted to be positioned in the 'upper portion of the outer tank or receptacle is a smaller or inner tank denoted generally by the reference numeral 100, and comprising a lower Wall 8 approximately parallel with the lower Wall 5 of the main tank and provided intermediate its ends with an upturncd portion 9 constituting a dam or baffle. The inner tank is provided with side walls 1() and 11' which lie parallel with the walls 1 and 2 of the. main tank and in juxtaposition thereto. The left cud wall ll of the inner tank l0() is spaced from the corresponding wall 3 of the main tanl: and is provided with a laterally-extendingflange to seat on thc upper end of the ivall 3 for supporting this end of the tank. 'lhe other end of' thc. tank is provided with a wall which lies approximately parallel and seats` on the wall 4 of the main tank. The right end of the inner tank 10Q is adapted toseat on the partition 47 for supporting it. The inner tank 100 is provided with covers (l and 't' by which access is had to the tank. The wall 3 of the main taak is provided bc,- low the upper end thereof with a cup-shaped receptacle l2 and is further provided with an openingr communicatin.;Y "therewith and the outside of the wall fl islprovifled with breken away to better illustrate the interior wall 5 and with an open upper end. EX-

an overnow drain 1-1 for a purpose to be later desea-il ed. The wall 13 of the inner tank 100 adjacent to the cup-shaped member 12 is provided with an opening and the material cut away in forming the opening is bent over thc'upper marginal wall of the cup-shaped member 12 to form a tightjoint therewith. The dam or baille 9 of the inner tank is positioned at a point remote from the wall 13 to provide a Sediment chamber 15 below the hinged cover 6 of the outer tank. i y

Mounted abo\e,'and if desired, on suitable supports, such for instance, as legs 1G, on the cover 6, is a receiving tank 17 for dirty oil proy'ided With a cover 18 and having a depending outlet 19 equipped with a. controlling valve 20. Below the valve extends a pipe 21Vinto the chamber 15. Extending transversely between the walls 10 and 11 of the inner tank is a partition 22- s aced from the under tace of the cover 6 and also spaced from the lower wall 8 of the inner tank.

` The diaphragm is also removed a short baille 9.

distance from the end wall 13 of the inner tank to form an upwardly-extending as# sa ge-way for a purpose to be later descri d. 'Extending transversely between the side walls 1() and 11 and positioned near the lower wall S of the inner tank is an L-shaped halile 23 the upper edge of which projects above the lower edge of the partition 22 and is spaced therefrom to provide a passage'- way. a saucenshaped member 24 provided with upwardly-timing side walls extending later ally suiiiciently to loosely engage the baffle .23 and the wall of the chamber 15. Centrally of the upper tace of the member 24 is an inverted cup-shaped spreader 25 provided usually onl one side only with discharge o' enings 2G. Secured to the upper Wall of tlie cup-shaped element 25 is an npwardly-projacting pipe 27 provided at its upper. end wit-h a socket 28 to receive the lower depending end ot the pipe 21. The chamber 15 is surrounded byaheating coil 29 which also.,extends'laterally'nnde the horizontal upper face y30 of the damor Around the heating coils 29 and extending between the side walls 10 and 11 is an inclosing easing 31, secured to the wall 3 and contacting with the dam or' hallle 9.

(ln the inner faces of the side walls 10 and 11 of the inner tank are two plates 32 and 33 with their ends secured in position by rivets 34 or otherwise, and with their intermediate portions provided with V- shaped corrugatious with the indcntations of one plate positioned opposite to the similar iudenlations ot'` the opposing plate. Normally ith the ends of these plates socuraal to th(` wallsl l() and ll the outer projecting points ot he corrugations will lie Positioned within the chamber 'l5 isv away from the walls 10 and 11 as shows at The distance between the indentations or outwardly-projecting portions -of thesey plates is discrctioiniry and is controlled? largely by the uses to which the lilter 'ctt/,44170 be put. The V-shaped )ortions of t ,ese plates constitute vertically-arranged seats for receiving and holding transversely-extending filtering media each of which customarily comprises a perforated plate 36 on which is placed one or more layers of a tiltering cloth or fabric 37 preferably secured to place by the hold-fast devices, such as stitches 3S extending through the perforations 39 of the plate. By securing the plates 32 and 33 at their ends and with their intermediate portions normally out of contact with the walls 1 and 2 at 1e points 35 these plates constitute frictional means for holding the filtering Ymedia 36 in position and also by their pressure against the plates 32 and 33 form comparatively fluid-tight joints so as to prevent the passage of the oil around the ends of the plates 36. The number of the filtering media 36, the distance between them, and their position in the inner tank, will, of course, depend upon the require# ments of the case and it may be stated that the invention is not limited by the number shown or illustrated in the drawings.

0n opposite sides of the inner faces of the walls 10 and 11 are a plurality ofangleplates 40 arranged in pairs, the members of each pair spaced apart andwith the members of each pair on the two plates 10 and 11 arranged opposite to each other. These lai'igle-plates extending vertically provide upright seats or Ways for boxes 41 having in the walls thereof perforations 42 and customarily filled with a filtering material. These boxes or tanks arefprovided with sidcy handles 43 for use in moving themvand as w they extend from the bottom to the top all oil passing through the filter must pass through them.

Atthe right of the inner tank is a trans wisely-extending diaphragm 44 provi ded near its lower portion with atransverse slot 4:5 positioned a. short' .distance above the lower wall 8 of the inner tank, thereby providing a chamber 46. Between the partition 47 and the side wall 4 of the outer tank is a chamber All). The lower wall 8 of the chamber 4G of the inner tank is provided with an aperture through which extends downwardly a pipe 50 preferably held in place by a pair of clamping nuts 51 and this pipe projects upwardly into the chamber 4G and is threaded to receive a cup-shaped member 52 having a threaded orifice in its lower wall, the threads of which run on the threads of the upper end of the pi'perl. The chamber 49 is provided with a. cock 53 positioned at the water level. The lower end ot the pipe 50 is threaded and between a pair of clamping nuts 54 thereon is a be. ,e plate 55 and abo-'ve the plete 1s a 'pair of clamping nuts holding between wall of the chamber 49 and 'the wall i is provided adj'cent to the lower side of the wall with drain pipe 6l. The Wall i provided with ordinary sigl'it-'gagee 62 and 68, a valve Get and, e nipple 65, the letter pipe conneetions for a purpose te be later described.

The operation ofv this device'is as follevfs" and in describing the operation a partiel enumeration and description of the s ecial advantages obtained by this improve eenstruction are given: The first step in the operation of the filter .consists iu filling the chamber 15 with clean water until` high, enough to oyeriiow through the outlet le, after which the cover 6 is elosefl and the eeiving tank 17 placed in position with the lower enrl of the pipe 2l seated in the socket 28 and the valve 2O closed. The vulve 53 is then opened and a sufficient quantity of clean water is placed in the chamber 4-,9 to

cause it to overflow through 'the valve after which this valve is closed. and the filter is ready. for operation. Of course, before the filter is used e cheek valve is placed ee the outlet 6l to prevent the escape of the Water in the chamber 49. nWhen itis desired to use the filter for what is known as a dry '-filter, and simply heat the oil previous to its being filtered without washing the same, no water is placed in the chamber 15.v The dirty oil is placed in the receiving tank 17 und the valve 20 opened slightly to permit an even and steady flow of the oil down werdly through the pipes 2l end 27 into the spreading element 2i'. The heavier foreign matters, such as dirt 'endnietallic chips will be deposited in the pau 2e and the oil will liow outwardly ythrough the opening'e 26 and upwardly in the direetion of the arrows over the darii 0r baiile 9. As the interior or the chamber is heated hy the Coil 29, the oil ie lgradually heated ae it rises .in the chamber i5 and flows in a thin str-earn over the upper face 300i the oaiiie 9 and during its passage `over this surface 30 it is exposed more directly to the heat and is warmed to e desired degree.

It will be noted that the partition or dier phregm 22 is higher than. the upper edge of the Cup-shaped overflow l2, und hence, the oil is prevented from overiiowing out Wardly through this opening. The usuzii Lvretehing of the eil takes place in its Sage upwardly from the spreader' 25 to the baille, 9 and hence e lar e eeenteffe of 7 V rw thefdirt in the oil is Washed4 out. It will be noted that 'providing the valve i matter how greet a volume of oil piaceri in the teni; 1'? the iow downwardly through the spreader 25 is even and tiuuoue, Ey positiening the opening` l n the one eide of the :spreader away from the barlie Stile oil is caused to travel in minute giobuies u' wardiy e greater distance than it' the -eprear er -Wee provided with openings oii all Sides. In passing over the baile 9 the oii .iews in a thin i'iim or stream into the bottom of the inner tank 100 and passes 'from thence to the right in the direction of the errewsthrough the filtering members 36 rl el and' through the slot 45 in the pertition 4Q and into the cupehaped member 52 :rnd downwardly through the pipe 50 around the baliie 55 through the openings 59 in the eenieei baiile 58 and around the outer edges ef the upper heme 57 and through the water in the chamber 4:9 and out through the slot 48 into the eliambfr for purified oil from whence it is drawn either through the cock G er by means of a pipe connection 65 when the filter is connected with what is known as an oiliifn-ev system.

By making the cup-shaped element 52 verticelly adjustable it constitutes a shut-oli er valve when raised to u. height greater than the level of the oil in the tank 100 and affords en ei'eetive (iamV against further movement of the oil, und at the same time, by adjlusting the height of this cup 52 the liew of oil through the filter ma be regu lated to suit the requirements of t e case.

Should it be desired at any timeto clean the chamber the upper clamping nut, 52 and the sup-shaped member are removed and inner tank 100 lifted out. However, mould it only be necessary t0 Wash the intex-ier of this tank the Cupehapeil member is raised sufficiently to stop ythe ioW of oil Ythreugh the pipe 50, the eook 5? opened end the oii above the 'wz in the chamber is drawn throng-li the outlet', after the dirty water ie permitted to es- .ugii the drain Si and access is had purposes. i eiuiiu: i. in oil filter embodying a reeeptaele, a vertical bulile or dani extending i'zpwardiy frein the lower Wall thereof and terminating below the top of said receptacle, a portion et' said receptacle one eide o'f said bafiie eenwhich stituting; :in oil heating and e sedimentation 2. An oil filter embodying a reoeptaclel a vertical baille or dam extending upwardly from the lower wall thereof and terminating below the top of said receptacle, a portion of said receptacle at one side of said baille constitutin an oil heatin and a sedimentation tank or the reception of dirty oil, a pluralityof spaced seats in the other portion of said receptacle, a plurality of upwardlyextending, independently-removable filtering media mounted in said seats, means to heat said sedimentation tank and said baille to thereby render the .oil free flowing and Capable of passing in a heated condition over the upper face of said baffle in a. thin film from said sedimentation tank to Said iltering tank.

3. An oil filter embodying a horizontal receptacle divided b averticalbafile or dam extending upwardly from the lower wall of the receptacle and terminating below the top thereof, 'a portion of said receptacle at one side of said baille containing water to constitute a bath and sedimentation tank for the reception of dirty oil, said portion provided with a water overflow belowthe top of the baflle, a plurality of spaced u wardly-extending, independently-remova le filteringl media mounted in the other portion of said receptacle, means to heat said sedimentation tank and Asaid baille to render the oil free flowing and capable 'of passing in a thin film and in a washed and heated Condition over the upper face of said baflle from the sedimentation tank to said filtering tank.

In testimony whereof l have hereunto set my hand in presence of two subscribing'wit- IleSSeS. Y

WILLIAM F. WARDEN. Witnesses: i

C. E. HUMPHREY, A. L. MoCLzNTooK. 

